I have a 65 mustang and I have lost the trunk key. What can I do to get it open, do I have to go through the trunk? The only solution I can see is to take the lock off from the inside.
Actually it is easy to take out the back seat and reach in to take off the lock from the inside. Get a longer extention if you need to. I've done it many times. A convertible is harder, but still doable with long extentions.
Yes you can remove the back seat and reach up to the latch rod (about 1/4 inch wide x 1/16 in thick rod that goas from the lock to the latch) with a pair of plyers and rotate it to the left and it should pop open... then mess with removing the old lock.